FeZnK/SAPO-34 Catalyst for Efficient Conversion of CO2 to Light Olefins.

Herein, a catalyst denoted as FeZnK/SAPO-G was designed and prepared through a granule-stacking method, where the FeZnK was active phase for producing hydrocarbons and SAPO-34 cracked long-chain hydrocarbons into short-chain hydrocarbons dominated by ethylene. This catalyst can achieve a high CO2 conversion (49.4%) with a favorable light olefin selectivity (52.4%) among the hydrocarbon products. Results of characterizations show that the integrated manner of FeZnK and SAPO-34 would have a significant impact on the reducibility, the acidity and CO2 adsorption property of catalyst, leading to different catalytic activity. The catalyst exhibited a favorable stability in 72-h reaction test, indicating a promising candidate for industrial application. [ABSTRACT FROM AUTHOR]